NHTSA ID Number: 11016787
Manufacturer Communication Number: L-SB-0016-25
TSB/Document Date: 2025-04-08
Summary
Some 2024 model year RZ 300e and RZ 450e vehicles may exhibit a condition where the charging limit setting defaults to full after every key cycle, removing the upper limit set by the customer. The electric converter unit assembly software logic has been modified to address this condition
L-SB-0016-25
February 12, 2025
Charging Limit Setting Defaults to Full After Every Key
Cycle
Service
Category
Section
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2024
RZ300E, RZ450E
VDS(s): AAAAB, ABABB
Introduction
Some 2024 model year RZ 300e and RZ 450e vehicles may exhibit a condition where the charging
limit setting defaults to full after every key cycle, removing the upper limit set by the customer.
The electric converter unit assembly software logic has been modified to address this condition.
Follow the Repair Procedure in this bulletin to address this condition.
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL
PLANT
DRIVETRAIN
PRODUCTION CHANGE EFFECTIVE VIN
2WD
JTJABABB#RA006004
AWD
JTJAAAAB#RA026775
RZ 300e
Motomachi
RZ 450e
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL2501
Reprogram the Electric Converter Unit Assy
0.7
G97A0-4####*
87
74
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
This repair is covered under the Lexus
Electric Vehicle Drive Components Warranty. This
warranty is in effect for 96 months or 100,000 miles, whichever occurs first, from the vehicle’s
in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
Page 1 of 4
L-SB-0016-25
February 12, 2025
Page 2 of 4
Charging Limit Setting Defaults to Full After Every Key Cycle
Parts Information
PART NUMBER
PART NAME
QTY
G97A0-#####
Unit Assy, Electric Converter w/Cap (ESU)
1
NOTE
The electric converter unit assembly (ESU) should NOT be replaced as part of the Repair Procedure.
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
DCA-8000 Battery Diagnostic Tool*
DCA-8000P T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-368-6787 or by visiting
Home – Service Resources – Lexus Special Service Tools (SSTs).
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVi*
PART NUMBER
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
1
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
NOTE
Only ONE of the Techstream units listed above is required.
GTS+ Software version 2024.04.004.02 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787 or by visiting TIS – Diagnostics – Tools & Equipment – Techstream Order Portal.
Use Techstream or an approved J2534 interface to perform flash reprogramming updates.
Visit techinfo.toyota.com for more information regarding J2534 reprogramming.
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
L-SB-0016-25
February 12, 2025
Page 3 of 4
Charging Limit Setting Defaults to Full After Every Key Cycle
Calibration Information
CALIBRATION ID
MODEL
RZ 300e
RZ 450e
DRIVETRAIN
VDS
PREVIOUS
NEW
892634238000
892634238100
2WD
ABABB
AWD
AAAAB
Repair Procedure
1. Confirm the condition exists.
A. Go to Settings – Charging – Charging limit.
B. Select 80%.
Figure 1.
2
C. Ready OFF.
1
D. Wait three minutes.
E. Ready ON.
F. Go back to Settings – Charging –
Charging limit.
Did the charging limit setting default to Full
after the key cycle?
YES — Continue to step 2.
NO — This bulletin does NOT apply.
Continue diagnosis using the
applicable Repair Manual.
1
80% Charging Limit Setting
2
Full Charging Limit Setting
2. Use GTS+ to confirm if the electric converter unit assembly calibration has been updated.
Is the calibration ID listed in GTS+ the latest calibration?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — Continue to step 3.
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
L-SB-0016-25
February 12, 2025
Page 4 of 4
Charging Limit Setting Defaults to Full After Every Key Cycle
Repair Procedure (continued)
3. Flash reprogram the electric converter unit assembly.
NOTE
The battery diagnostic tool MUST be used in Power Supply Mode to maintain battery voltage
at 13.5V while flash reprogramming the vehicle.
For details on how to use the battery diagnostic station, refer to the DCA-8000 Instruction Manual
located at TIS – Diagnostics – Tools & Equipment – Battery Diagnostics.
Follow the procedures outlined in Service Bulletin L-SB-0036-22, GTS+ ECU Flash
Reprogramming With Security Signature, and flash reprogram the electric converter unit
assembly with the NEW calibration file update.
4. Using GTS+, clear ANY DTCs and test-drive the vehicle to confirm the condition has
been addressed.
NOTE
After DTCs are cleared, be sure to IG OFF and let vehicle rest for no less than 30 seconds before
Ready ON.
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
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TSB/Document ID: L-SB-0016-25
Replacement Service Bulletin Number:
MFR Communication Date: 2025-02-12
MFR Internal Campaign ID/Software Version: L-SB-0016-25
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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